Deilocerus decorus (Rathbun, 1933)

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 203-205

Deilocerus decorus (Rathbun, 1933)

( Fig. 47C, D)

Clythrocerus decorus Rathbun, 1933: 185 . — Rathbun 1937: 118, text fig. 30, pl. 34, figs. 3, 4. — Wicksten 1988: 242. Deilocerus decorus . — Tavares 1993: 140. — Hendrickx 1997: 37, fig. 43.

Diagnosis. Carapace rounded, about as long as wide, granulate; frontal lobes ending in cylindrical blunt spines separated by triangular sinus, orbit with triangular notch above, outer subacute spine. Lateral margin with two prominent teeth. Flagellum of antenna short, peduncle with tubercle. Eye short, without true orbit. Third maxillipeds elongate. Chelipeds stout, excurrent branchial openings near their bases; carpus with two lobes on outer margin, one at inner angle; large tooth at proximal outer margin of propodus, another at articulation with dactyl. Pereopods 2, 3 long and slender; merus, carpus spinulous on margins; dactyls long, simple. Pereopods 4, 5 short, subdorsal, with dactyl closing against propodus. Basal segments of abdomen visible in dorsal view, female abdomen particularly wide and cupped, male abdomen narrow. Male, female genital openings coxal. Carapace length 6 mm.

Color in life. Not reported.

Habitat and depth. Among broken shells, 70–185 m.

Range. Off Soberanes Point, Monterey County, California to off Point Loma, California; north of Angel de la

Guardia I. and south of Tiburon I., Gulf of California, Mexico. Type locality off Brockway Point, Santa Rosa I .,

California. Remarks. One was observed to carry a sponge in its hind legs (Wicksten 1988).